According to a post at Expreview a bunch of NVIDIA products have been delayed to March. This includes the GeForce 9800 GX2 but also the nForce 780a, 750a, 790i and 790i Ultra chipsets:
Delayed new products including 780a, 750a, 790i, 790i Ultra, and 9800 GX2. All these products should be announced in Feb, 2008. Sources did not mention the reason why NV hold the upcoming releases. And we guess that’s because of factories are running into Chinese new year holiday.
The delay will push back the war between GeForce 9800GX2 and Radeon HD 3870 X2. And that means HD 3870 X2 will be the absolutely highest product in the market, continue eating NVIDIA’s share for one extra month.
And 790i and 790i Ultra’s delay will make them directly face Intel’s X48. Also, in NVIDIA’s February product line, only GeForce 8200 will still stick on NV’s roadmap, to be released in Feb. But GeForce 8200’s rival, AMD’s 780G have been released in China few days ago.